<?php
/*
 * The MIT License
 * 
 * Copyright (c) 2009 David Neu
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

require_once(dirname(__FILE__).DIRECTORY_SEPARATOR.'GpxFile.php');

class GpxIndex {
    
    private $dir = '';
    
    public function __construct($dir = '.') {
        if (substr($dir, -1) == DIRECTORY_SEPARATOR) {
            $dir = substr($dir, 0, -1);
        }
        $this->dir = $dir;
    }
    
    public function createIndex() {
        $res = array();
        $dh = opendir($this->dir);
        while($file = readdir($dh)) {
            if (substr($file,-3) == 'gpx') {
                if (is_file($this->dir.DIRECTORY_SEPARATOR.$file)) {
                    $f = new GpxFile($this->dir.DIRECTORY_SEPARATOR.$file);
                    $res[] = $f;
                }
            }
        }
        closedir($dh);
        
        $byTime = array();
        foreach($res as $file) {
            $byTime[$file->getFirstTime()] = $file;
        }
        krsort($byTime);
        
        return $byTime;
    }
}
?>